Cookies and Consent: Best Practices

Introduction

Cookie management is one of the most visible aspects of data protection compliance. A well-implemented cookie banner demonstrates commitment to user privacy.

Types of Cookies

Strictly Necessary Cookies

• Essential for website operation
• Do not require consent
• Examples: session, shopping cart, security

Preference Cookies

• Store user preferences
• Require consent
• Examples: language, region, theme

Statistics Cookies

• Analyze browsing behavior
• Require consent
• Examples: Google Analytics, Hotjar

Marketing Cookies

• Track users for advertising
• Require explicit consent
• Examples: Facebook Pixel, Google Ads

Consent Requirements

GDPR

• Free, specific, informed and unambiguous consent
• Clear affirmative action (opt-in)
• Easy withdrawal of consent
• Granularity by category

LGPD

• Free, informed and unambiguous consent
• Specific purpose
• Possibility of revocation

Best Practices

1. Clear and Visible Banner

• Simple and direct language
• Clear accept/reject options
• Don't use dark patterns

2. Granularity

• Allow choice by category
• Don't group all cookies
• Explain each category

3. Easy Management

• Button to change preferences
• Accessible on all pages
• Don't make rejection difficult

4. Documentation

• Detailed cookie policy
• List of cookies used
• Purpose and duration of each cookie

5. Technical Implementation

• Block cookies before consent
• Record proof of consent
• Respect preferences on all pages

Common Mistakes

• Cookie walls (blocking access without consent)
• Pre-selecting cookie options
• Making rejection difficult
• Not blocking cookies before consent
• Not allowing preference changes

Conclusion

A well-implemented cookie system is essential for compliance and user trust. Invest time in proper configuration.